Refrigeration device

1. A refrigeration device having a refrigerant circuit, the refrigeration device comprising: a high-voltage electrical parts group including a plurality of reactors and cooled elements; a low-voltage electrical parts group; a printed wiring board; and a refrigerant jacket that uses refrigerant flowing through the refrigerant circuit to cool the cooled elements, the high-voltage electrical parts group including the reactors and the low-voltage electrical parts group are mounted on one main surface of the printed wiring board, the high-voltage electrical parts group forming an interleaved power supply circuit, the cooled elements of the power supply circuit being placed in an order conforming to a power supply path of the power supply circuit, the power supply circuit having a rectifier circuit, a power factor improvement circuit, smoothing capacitors, and an inverter circuit, the power factor improvement circuit having the plurality of reactors connected to each other in parallel and diodes and switching elements serving as the cooled elements connect to each of the reactors, and the reactors being placed on an opposite side of the smoothing capacitors, with the diodes and the switching elements forming the power factor improvement circuit being sandwiched in between.

2. The refrigeration device according to claim 1 , wherein the reactors are placed adjacent to the diodes and the switching elements forming the power factor improvement circuit.